diff --git a/gnu/packages/android.scm b/gnu/packages/android.scm
index 6baefbca96..637cda0205 100644
--- a/gnu/packages/android.scm
+++ b/gnu/packages/android.scm
@@ -457,7 +457,7 @@ def _FindRepo():
      ;; TODO: Add git-remote-persistent-https once it is available in guix
      `(("git" ,git)
        ("gnupg" ,gnupg)
-       ("ssh", openssh)))
+       ("ssh" ,openssh)))
     (native-inputs
      `(("nose" ,python2-nose)))
     (home-page "https://code.google.com/p/git-repo/")
diff --git a/gnu/packages/bootloaders.scm b/gnu/packages/bootloaders.scm
index 9ea8748a5b..582c71cc4a 100644
--- a/gnu/packages/bootloaders.scm
+++ b/gnu/packages/bootloaders.scm
@@ -181,7 +181,7 @@ menu to select one of the installed operating systems.")
     (synopsis "GRand Unified Boot loader (UEFI version)")
     (inputs
      `(("efibootmgr" ,efibootmgr)
-       ("mtools", mtools)
+       ("mtools" ,mtools)
        ,@(package-inputs grub)))
     (arguments
      `(;; TODO: Tests need a UEFI firmware for qemu. There is one at
diff --git a/gnu/packages/build-tools.scm b/gnu/packages/build-tools.scm
index 2abb44fdb8..73eacf7df2 100644
--- a/gnu/packages/build-tools.scm
+++ b/gnu/packages/build-tools.scm
@@ -81,7 +81,7 @@ makes a few sacrifices to acquire fast full and incremental build times.")
                (base32
                 "06r8limj38mv884s5riiz6lpzw37cvhbf9jd0smzcbi7fwmv3yah"))))
     (build-system python-build-system)
-    (inputs `(("ninja", ninja)))
+    (inputs `(("ninja" ,ninja)))
     (propagated-inputs `(("python" ,python)))
     (home-page "https://mesonbuild.com/")
     (synopsis "Build system designed to be fast and user-friendly")
diff --git a/gnu/packages/chemistry.scm b/gnu/packages/chemistry.scm
index ed883072b4..f1359b2cf6 100644
--- a/gnu/packages/chemistry.scm
+++ b/gnu/packages/chemistry.scm
@@ -73,8 +73,8 @@ only with Python 2 and NumPy < 1.9.")
     (build-system python-build-system)
     (inputs
      `(("python-matplotlib" ,(with-numpy-1.8 python2-matplotlib))
-       ("python-scientific", python2-scientific)
-       ("netcdf", netcdf)
+       ("python-scientific" ,python2-scientific)
+       ("netcdf" ,netcdf)
        ("gv" ,gv)))
     (propagated-inputs
      `(("python-mmtk" ,python2-mmtk)))
diff --git a/gnu/packages/compression.scm b/gnu/packages/compression.scm
index 05442024f6..f92239d505 100644
--- a/gnu/packages/compression.scm
+++ b/gnu/packages/compression.scm
@@ -1657,7 +1657,7 @@ speed.")
     (source (package-source zstd))
     (build-system gnu-build-system)
     (native-inputs
-     `(("googletest", googletest)))
+     `(("googletest" ,googletest)))
     (arguments
      `(#:phases
        (modify-phases %standard-phases
diff --git a/gnu/packages/connman.scm b/gnu/packages/connman.scm
index 25756019fd..7e87cd8968 100644
--- a/gnu/packages/connman.scm
+++ b/gnu/packages/connman.scm
@@ -70,7 +70,7 @@
              (string-append
               "--with-dbusdatadir=" (assoc-ref %outputs "out") "/share"))))
     (native-inputs
-     `(("pkg-config", pkg-config)
+     `(("pkg-config" ,pkg-config)
        ("python" ,python-2)))
     (inputs
      `(("dbus" ,dbus)
@@ -84,7 +84,7 @@
        ;; TODO: add neard, ofono
        ("openconnect" ,openconnect)
        ("openvpn" ,openvpn)
-       ("ppp", ppp)
+       ("ppp" ,ppp)
        ("vpnc" ,vpnc)
        ("wpa-supplicant" ,wpa-supplicant)))
     (home-page "https://01.org/connman")
diff --git a/gnu/packages/django.scm b/gnu/packages/django.scm
index a901af6f14..4501b5c745 100644
--- a/gnu/packages/django.scm
+++ b/gnu/packages/django.scm
@@ -75,7 +75,7 @@
              (zero? (system* "python" "tests/runtests.py")))))))
     ;; TODO: Install extras/django_bash_completion.
     (native-inputs
-     `(("tzdata", tzdata-for-tests)
+     `(("tzdata" ,tzdata-for-tests)
        ;; bcrypt and argon2-cffi are extra requirements not yet in guix
        ;;("python-argon2-cffi" ,python-argon2-cffi) ; >= 16.1.0
        ;;("python-bcrypt" ,python-bcrypt) ; not py-bcrypt!
@@ -199,7 +199,7 @@ useful tools for testing Django applications and projects.")
     (native-inputs
      `(("python-django" ,python-django)
        ("python-djangorestframework" ,python-djangorestframework)
-       ("python-django-crispy-forms", python-django-crispy-forms)
+       ("python-django-crispy-forms" ,python-django-crispy-forms)
        ("python-mock" ,python-mock)))
     (home-page "https://django-filter.readthedocs.io/en/latest/")
     (synopsis "Reusable Django application to filter querysets dynamically")
diff --git a/gnu/packages/emulators.scm b/gnu/packages/emulators.scm
index 142603b082..9d8e7fa1ae 100644
--- a/gnu/packages/emulators.scm
+++ b/gnu/packages/emulators.scm
@@ -1095,7 +1095,7 @@ emulation community.  It provides highly accurate emulation.")
        ("sdl" ,sdl2)
        ("udev" ,eudev)
        ("vulkan-icd-loader" ,vulkan-icd-loader)
-       ("wayland", wayland)
+       ("wayland" ,wayland)
        ("zlib" ,zlib)))
     (native-inputs
      `(("pkg-config" ,pkg-config)
diff --git a/gnu/packages/engineering.scm b/gnu/packages/engineering.scm
index 449584f57e..076d4b6094 100644
--- a/gnu/packages/engineering.scm
+++ b/gnu/packages/engineering.scm
@@ -862,7 +862,7 @@ the 'showing the effect of'-style of operation.")
     (inputs
      `(("boost" ,boost)))
     (native-inputs
-     `(("python-2", python-2)
+     `(("python-2" ,python-2)
        ("python2-cheetah" ,python2-cheetah)))
     (home-page "http://libvolk.org/")
     (synopsis "Vector-Optimized Library of Kernels")
diff --git a/gnu/packages/file-systems.scm b/gnu/packages/file-systems.scm
index 0e65213c72..6522662c4e 100644
--- a/gnu/packages/file-systems.scm
+++ b/gnu/packages/file-systems.scm
@@ -236,7 +236,7 @@ All of this is accomplished without a centralized metadata server.")
     (inputs
      `(("curl" ,curl)
        ("glib" ,glib)
-       ("fuse", fuse)))
+       ("fuse" ,fuse)))
     (native-inputs
      `(("pkg-config" ,pkg-config)))
     (home-page "http://curlftpfs.sourceforge.net/")
diff --git a/gnu/packages/flashing-tools.scm b/gnu/packages/flashing-tools.scm
index 192f84c36c..51b259a5cf 100644
--- a/gnu/packages/flashing-tools.scm
+++ b/gnu/packages/flashing-tools.scm
@@ -104,7 +104,7 @@ programmer devices.")
         "1g4032c81wkk37wvbg1dxcqq6mnd76y9x7f2crmzqi6z4q9jcxmj"))))
     (build-system gnu-build-system)
     (inputs
-     `(("libusb",libusb-0.1))) ; doesn't work with libusb-compat
+     `(("libusb" ,libusb-0.1))) ; doesn't work with libusb-compat
     (arguments
      '(#:phases
        (modify-phases %standard-phases
diff --git a/gnu/packages/freedesktop.scm b/gnu/packages/freedesktop.scm
index 366fcecea2..f673c4bf34 100644
--- a/gnu/packages/freedesktop.scm
+++ b/gnu/packages/freedesktop.scm
@@ -357,7 +357,7 @@ of a the system to know what users are logged in, and where.")
        ("glib:bin" ,glib "bin")))
     (inputs
      `(("glib" ,glib)
-       ("bash-completion", bash-completion)
+       ("bash-completion" ,bash-completion)
        ("polkit" ,polkit)))
     (propagated-inputs
      `(("sqlite" ,sqlite)))
diff --git a/gnu/packages/games.scm b/gnu/packages/games.scm
index a33da03ad5..a03e58b0ad 100644
--- a/gnu/packages/games.scm
+++ b/gnu/packages/games.scm
@@ -234,7 +234,7 @@ settings to tweak as well.")
        ("libvorbis" ,libvorbis)
        ("ncurses" ,ncurses)
        ("sdl2" ,sdl2)
-       ("sdl2-image", sdl2-image)
+       ("sdl2-image" ,sdl2-image)
        ("sdl2-ttf" ,sdl2-ttf)
        ("sdl2-mixer" ,sdl2-mixer)))
     (home-page "http://en.cataclysmdda.com/")
@@ -2230,19 +2230,19 @@ Transport Tycoon Deluxe.")
               (substitute* "cmake_install.cmake"
                 (("EXPECTED_HASH SHA1=b587d83de508d0b104d14c599b76f8565900fce0")
                 "")))))))
-    (inputs `(("curl", curl)
-              ("fontconfig", fontconfig)
-              ("freetype", freetype)
-              ("jansson", jansson)
-              ("libpng", libpng)
-              ("libzip", libzip)
-              ("mesa", mesa)
-              ("openssl", openssl)
-              ("sdl2", sdl2)
-              ("speexdsp", speexdsp)
-              ("zlib", zlib)))
+    (inputs `(("curl" ,curl)
+              ("fontconfig" ,fontconfig)
+              ("freetype" ,freetype)
+              ("jansson" ,jansson)
+              ("libpng" ,libpng)
+              ("libzip" ,libzip)
+              ("mesa" ,mesa)
+              ("openssl" ,openssl)
+              ("sdl2" ,sdl2)
+              ("speexdsp" ,speexdsp)
+              ("zlib" ,zlib)))
     (native-inputs
-      `(("pkg-config", pkg-config)))
+      `(("pkg-config" ,pkg-config)))
     (home-page "https://github.com/OpenRCT2/OpenRCT2")
     (synopsis "Free software re-implementation of RollerCoaster Tycoon 2")
     (description "OpenRCT2 is a free software re-implementation of
diff --git a/gnu/packages/gimp.scm b/gnu/packages/gimp.scm
index c98f686d41..2483885c95 100644
--- a/gnu/packages/gimp.scm
+++ b/gnu/packages/gimp.scm
@@ -175,12 +175,12 @@ buffers.")
        ("libjpeg" ,libjpeg-8)
        ("atk" ,atk)
        ("gtk+" ,gtk+-2)
-       ("exif" ,libexif)                         ;optional, EXIF + XMP support
-       ("lcms" ,lcms)                            ;optional, color management
-       ("librsvg" ,librsvg)                      ;optional, SVG support
-       ("poppler", poppler)             ; optional, PDF support
-       ("python" ,python-2)                      ;optional, Python support
-       ("python2-pygtk" ,python2-pygtk)          ;optional, Python support
+       ("exif" ,libexif)                ; optional, EXIF + XMP support
+       ("lcms" ,lcms)                   ; optional, color management
+       ("librsvg" ,librsvg)             ; optional, SVG support
+       ("poppler" ,poppler)             ; optional, PDF support
+       ("python" ,python-2)             ; optional, Python support
+       ("python2-pygtk" ,python2-pygtk) ; optional, Python support
        ("gegl" ,gegl)))
     (native-inputs
      `(("pkg-config" ,pkg-config)
diff --git a/gnu/packages/gl.scm b/gnu/packages/gl.scm
index 0e416a9efd..f46c4b4d4b 100644
--- a/gnu/packages/gl.scm
+++ b/gnu/packages/gl.scm
@@ -756,7 +756,7 @@ mixed vector/bitmap output.")
               ("libjpeg-turbo" ,libjpeg-turbo)
               ("mesa" ,mesa)
               ("openssl" ,openssl)))
-    (native-inputs `(("pkg-config", pkg-config)))
+    (native-inputs `(("pkg-config" ,pkg-config)))
     (home-page "https://www.virtualgl.org")
     (synopsis "Redirects 3D commands from an OpenGL application onto a 3D
 graphics card")
diff --git a/gnu/packages/gnome.scm b/gnu/packages/gnome.scm
index 56ee1aa885..8ce36430ee 100644
--- a/gnu/packages/gnome.scm
+++ b/gnu/packages/gnome.scm
@@ -273,7 +273,7 @@ features to enable users to create their discs easily and quickly.")
        ("gettext" ,gettext-minimal)
        ("itstool" ,itstool)
        ("intltool" ,intltool)
-       ("cmake", cmake)))
+       ("cmake" ,cmake)))
     (home-page "https://launchpad.net/deja-dup")
     (synopsis "Simple backup tool, for regular encrypted backups")
     (description
diff --git a/gnu/packages/graphics.scm b/gnu/packages/graphics.scm
index 8504b2f11e..8ea9c74cec 100644
--- a/gnu/packages/graphics.scm
+++ b/gnu/packages/graphics.scm
@@ -435,13 +435,13 @@ visual effects work for film.")
     (native-inputs
      `(("unzip" ,unzip)))
     (inputs
-     `(("giflib", giflib)
-       ("jasper", jasper)
-       ("librsvg", librsvg)
-       ("pth", pth)
-       ("qtbase", qtbase)
-       ("ffmpeg", ffmpeg)
-       ("mesa", mesa)))
+     `(("giflib" ,giflib)
+       ("jasper" ,jasper)
+       ("librsvg" ,librsvg)
+       ("pth" ,pth)
+       ("qtbase" ,qtbase)
+       ("ffmpeg" ,ffmpeg)
+       ("mesa" ,mesa)))
     (synopsis "High performance real-time graphics toolkit")
     (description
      "The OpenSceneGraph is a high performance 3D graphics toolkit
diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index c5408f8627..9c59f56139 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -7881,7 +7881,7 @@ files in Haskell.")
     (inputs
      `(("ghc-mtl" ,ghc-mtl)
        ("ghc-network" ,ghc-network)
-       ("ghc-directory", ghc-directory)
+       ("ghc-directory" ,ghc-directory)
        ("ghc-old-locale" ,ghc-old-locale)))
     (native-inputs
      `(("ghc-hunit" ,ghc-hunit)))
@@ -8458,7 +8458,7 @@ that are much lighter weight than IO-threads.")
     (native-inputs
      `(("ghc-hunit" ,ghc-hunit)
        ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-ieee754", ghc-ieee754)
+       ("ghc-ieee754" ,ghc-ieee754)
        ("ghc-test-framework" ,ghc-test-framework)
        ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
        ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
@@ -8582,7 +8582,7 @@ statically known size.")
     (build-system haskell-build-system)
     (inputs `(("ghc-tuple-th" ,ghc-tuple-th)
               ("ghc-contravariant" ,ghc-contravariant)
-              ("ghc-base-prelude",ghc-base-prelude)))
+              ("ghc-base-prelude" ,ghc-base-prelude)))
     (home-page "https://github.com/nikita-volkov/contravariant-extras")
     (synopsis "Extras for the @code{ghc-contravariant} Haskell package")
     (description "This Haskell package provides extras for the
@@ -8897,7 +8897,7 @@ and are often as efficient as hand-written folds.")
               ("ghc-vector-algorithms" ,ghc-vector-algorithms)
               ("ghc-split" ,ghc-split)))
     (native-inputs `(("ghc-hspec" ,ghc-hspec)
-                     ("ghc-hunit",ghc-hunit)
+                     ("ghc-hunit" ,ghc-hunit)
                      ("ghc-quickcheck" ,ghc-quickcheck)
                      ("ghc-semigroups" ,ghc-semigroups)
                      ("ghc-foldl" ,ghc-foldl)))
diff --git a/gnu/packages/irc.scm b/gnu/packages/irc.scm
index e59b34417b..bad27dacb6 100644
--- a/gnu/packages/irc.scm
+++ b/gnu/packages/irc.scm
@@ -100,7 +100,7 @@
        ("qttools" ,qttools)))
     (inputs
      `(("qca" ,qca)
-       ("qtbase", qtbase)
+       ("qtbase" ,qtbase)
        ("qtscript" ,qtscript)
        ("snorenotify" ,snorenotify)
        ("zlib" ,zlib)))
diff --git a/gnu/packages/kde-frameworks.scm b/gnu/packages/kde-frameworks.scm
index 246860e3f3..b763a03476 100644
--- a/gnu/packages/kde-frameworks.scm
+++ b/gnu/packages/kde-frameworks.scm
@@ -157,7 +157,7 @@ common build settings used in software produced by the KDE community.")
      ;; TODO: Add building the super experimental QML support
      `(("extra-cmake-modules" ,extra-cmake-modules)
        ("pkg-config" ,pkg-config)
-       ("qttools", qttools)))
+       ("qttools" ,qttools)))
     (inputs
      `(("qtbase" ,qtbase)))
     (arguments
@@ -1186,7 +1186,7 @@ lower level classes for interaction with the X Windowing System.")
        ("pkg-config" ,pkg-config)))
     (propagated-inputs
      ;; Headers contain #include <ModemManager/ModemManager.h>
-     `(("modem-manager", modem-manager)))
+     `(("modem-manager" ,modem-manager)))
     (inputs
      `(("qtbase" ,qtbase)))
     (arguments
@@ -1284,7 +1284,7 @@ which are used in DBus communication.")
     (native-inputs
      `(("extra-cmake-modules" ,extra-cmake-modules)))
     (inputs
-     `(("libdmtx", libdmtx)
+     `(("libdmtx" ,libdmtx)
        ("qrencode" ,qrencode)
        ("qtbase" ,qtbase))) ;; TODO: rethink: nix propagates this
     (home-page "https://api.kde.org/frameworks/prison/html/index.html")
@@ -2209,7 +2209,7 @@ their settings.")
        ("kwidgetsaddons" ,kwidgetsaddons)
        ("kwindowsystem" ,kwindowsystem)
        ("kxmlgui" ,kxmlgui)
-       ("libepoxy", libepoxy)
+       ("libepoxy" ,libepoxy)
        ("qtbase" ,qtbase)
        ("qtdeclarative" ,qtdeclarative)
        ("solid" ,solid)))
@@ -3003,7 +3003,7 @@ types or handled by application specific code.")
        ("libgit2" ,libgit2)
        ("perl" ,perl)
        ("qtbase" ,qtbase)
-       ("qtdeclarative", qtdeclarative)
+       ("qtdeclarative" ,qtdeclarative)
        ("qtscript" ,qtscript)
        ("qtxmlpatterns" ,qtxmlpatterns)
        ("solid" ,solid)
@@ -3071,7 +3071,7 @@ library.")
        ("kwidgetsaddons" ,kwidgetsaddons)
        ("kwindowsystem" ,kwindowsystem)
        ("qtbase" ,qtbase)
-       ("qtspeech", qtspeech)))
+       ("qtspeech" ,qtspeech)))
     (arguments
      `(#:phases
        (modify-phases %standard-phases
@@ -3150,7 +3150,7 @@ the passwords on KDE work spaces.")
      `(("extra-cmake-modules" ,extra-cmake-modules)))
     (inputs
      `(("attica" ,attica)
-       ("kauth", kauth)
+       ("kauth" ,kauth)
        ("kcodecs" ,kcodecs)
        ("kcoreaddons" ,kcoreaddons)
        ("kglobalaccel" ,kglobalaccel)
@@ -3395,7 +3395,7 @@ workspace.")
      `(("dbus" ,dbus)
        ("docbook-xml" ,docbook-xml-4.4) ; optional
        ("extra-cmake-modules" ,extra-cmake-modules)
-       ("perl", perl)
+       ("perl" ,perl)
        ("perl-uri" ,perl-uri)
        ("pkg-config" ,pkg-config)
        ("shared-mime-info" ,shared-mime-info)
@@ -3421,7 +3421,7 @@ workspace.")
        ("knotifications" ,knotifications)
        ("kparts" ,kparts)
        ("ktextwidgets" ,ktextwidgets)
-       ("kunitconversion", kunitconversion)
+       ("kunitconversion" ,kunitconversion)
        ("kwindowsystem" ,kwindowsystem)
        ("qtbase" ,qtbase)))
     (inputs
@@ -3434,9 +3434,9 @@ workspace.")
        ("kservice" ,kservice)
        ("kwidgetsaddons" ,kwidgetsaddons)
        ("kxmlgui" ,kxmlgui)
-       ("libsm", libsm)
-       ("networkmanager-qt", networkmanager-qt)
-       ("openssl", openssl)
+       ("libsm" ,libsm)
+       ("networkmanager-qt" ,networkmanager-qt)
+       ("openssl" ,openssl)
        ("qtsvg" ,qtsvg)
        ("qttools" ,qttools)
        ("qtx11extras" ,qtx11extras)))
@@ -3507,7 +3507,7 @@ http://community.kde.org/Frameworks/Porting_Notes should help with this.")
     (build-system cmake-build-system)
     (native-inputs
      `(("extra-cmake-modules" ,extra-cmake-modules)
-       ("perl", perl)))
+       ("perl" ,perl)))
     (inputs
      `(("giflib" ,giflib)
        ("gperf" ,gperf)
@@ -3521,14 +3521,14 @@ http://community.kde.org/Frameworks/Porting_Notes should help with this.")
        ("knotifications" ,knotifications)
        ("kparts" ,kparts)
        ("ktextwidgets" ,ktextwidgets)
-       ("kwallet", kwallet)
+       ("kwallet" ,kwallet)
        ("kwidgetsaddons" ,kwidgetsaddons)
        ("kwindowsystem" ,kwindowsystem)
        ("kxmlgui" ,kxmlgui)
-       ("libjpeg", libjpeg)
-       ("libpng", libpng)
-       ("openssl", openssl)
-       ("phonon", phonon)
+       ("libjpeg" ,libjpeg)
+       ("libpng" ,libpng)
+       ("openssl" ,openssl)
+       ("phonon" ,phonon)
        ("qtbase" ,qtbase)
        ("qtx11extras" ,qtx11extras)
        ("sonnet" ,sonnet)))
diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index df6d7468ac..a268c4db0d 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -1778,9 +1778,9 @@ file system is as easy as logging into the server with an SSH client.")
         (base32
          "0v4si1ri6lhnq9q87gkx7fsh6lv6xz4bynknwndqncpvfp5cy1jg"))))
     (build-system gnu-build-system)
-    (inputs `(("fuse", fuse)
-              ("libarchive", libarchive)))
-    (native-inputs `(("pkg-config", pkg-config)))
+    (inputs `(("fuse" ,fuse)
+              ("libarchive" ,libarchive)))
+    (native-inputs `(("pkg-config" ,pkg-config)))
     (home-page "http://www.cybernoia.de/software/archivemount")
     (synopsis "Tool for mounting archive files with FUSE")
     (description "archivemount is a FUSE-based file system for Unix variants,
@@ -2034,7 +2034,7 @@ from the module-init-tools project.")
        ("docbook-xml" ,docbook-xml-4.2)
        ("docbook-xsl" ,docbook-xsl)
        ("libxml2" ,libxml2)             ;for $XML_CATALOG_FILES
-       ("xsltproc", libxslt)))
+       ("xsltproc" ,libxslt)))
     (inputs
      ;; When linked against libblkid, eudev can populate /dev/disk/by-label
      ;; and similar; it also installs the '60-persistent-storage.rules' file,
@@ -3707,7 +3707,7 @@ are exceeded.")
     (inputs
      `(("acl" ,acl)
        ("libuuid" ,util-linux)
-       ("lzo", lzo)
+       ("lzo" ,lzo)
        ("zlib" ,zlib)))
     (build-system gnu-build-system)
     (arguments
@@ -4137,13 +4137,13 @@ used by nftables.")
         (base32
          "1i1gfy8l7qyhc5vlrpp63s0n5kybmc9pi4dywiq8rmkhrrnddsla"))))
     (build-system gnu-build-system)
-    (inputs `(("bison", bison)
-              ("flex", flex)
-              ("gmp", gmp)
-              ("libmnl", libmnl)
-              ("libnftnl", libnftnl)
-              ("readline", readline)))
-    (native-inputs `(("pkg-config", pkg-config)))
+    (inputs `(("bison" ,bison)
+              ("flex" ,flex)
+              ("gmp" ,gmp)
+              ("libmnl" ,libmnl)
+              ("libnftnl" ,libnftnl)
+              ("readline" ,readline)))
+    (native-inputs `(("pkg-config" ,pkg-config)))
     (home-page "http://www.nftables.org")
     (synopsis "Userspace utility for Linux packet filtering")
     (description "nftables is the project that aims to replace the existing
diff --git a/gnu/packages/lua.scm b/gnu/packages/lua.scm
index 0d4bf12817..69180abeac 100644
--- a/gnu/packages/lua.scm
+++ b/gnu/packages/lua.scm
@@ -354,12 +354,12 @@ secure session between the peers.")
     (inputs
      `(("gobject-introspection" ,gobject-introspection)
        ("glib" ,glib)
-       ("pango", pango)
-       ("gtk", gtk+-2)
+       ("pango" ,pango)
+       ("gtk" ,gtk+-2)
        ("lua" ,lua)
        ("cairo" ,cairo)
        ("libffi" ,libffi)
-       ("xorg-server", xorg-server)))
+       ("xorg-server" ,xorg-server)))
     (native-inputs
      `(("pkg-config" ,pkg-config)
        ("dbus" ,dbus)))                          ;tests use 'dbus-run-session'
@@ -397,7 +397,7 @@ Notable examples are GTK+, GStreamer and Webkit.")
                              (string-append out "/share/lua/" lua-version))
                #t))))
        #:test-target "test"))
-    (inputs `(("lua", lua)))
+    (inputs `(("lua" ,lua)))
     (synopsis "Pattern-matching library for Lua")
     (description
      "LPeg is a pattern-matching library for Lua, based on Parsing Expression
@@ -436,7 +436,7 @@ Grammars (PEGs).")
        #:phases
        (modify-phases %standard-phases
          (delete 'configure))))
-    (inputs `(("lua", lua)))
+    (inputs `(("lua" ,lua)))
     (home-page "https://bitop.luajit.org/index.html")
     (synopsis "Bitwise operations on numbers for Lua")
     (description
diff --git a/gnu/packages/mail.scm b/gnu/packages/mail.scm
index 7986671e97..1d52b35929 100644
--- a/gnu/packages/mail.scm
+++ b/gnu/packages/mail.scm
@@ -1812,7 +1812,7 @@ in Perl.")
              (patch-shebang "mb2md" (list (string-append perl "/bin")))
              (chmod "mb2md" #o555))
            #t))))
-    (native-inputs `(("gzip", gzip)))
+    (native-inputs `(("gzip" ,gzip)))
     (inputs `(("perl" ,perl)
               ("perl-timedate" ,perl-timedate)))
     (home-page "http://batleth.sapienti-sat.org/projects/mb2md/")
diff --git a/gnu/packages/make-bootstrap.scm b/gnu/packages/make-bootstrap.scm
index 779b7ef5aa..99488fb4c4 100644
--- a/gnu/packages/make-bootstrap.scm
+++ b/gnu/packages/make-bootstrap.scm
@@ -108,7 +108,7 @@ for `sh' in $PATH, and without nscd, and with static NSS modules."
           ("gcc" ,(package (inherit gcc)
                     (outputs '("out")) ; all in one so libgcc_s is easily found
                     (inputs
-                     `(("libc",(glibc-for-bootstrap))
+                     `(("libc" ,(glibc-for-bootstrap))
                        ("libc:static" ,(glibc-for-bootstrap) "static")
                        ,@(package-inputs gcc)))))
           ,@(fold alist-delete (%final-inputs) '("libc" "gcc")))))
diff --git a/gnu/packages/messaging.scm b/gnu/packages/messaging.scm
index ae489e1586..6ce8b258bb 100644
--- a/gnu/packages/messaging.scm
+++ b/gnu/packages/messaging.scm
@@ -144,9 +144,9 @@ keys, no previous conversation is compromised.")
      #:configure-flags '("-DBUILD_SHARED_LIBS=on" "-DBUILD_TESTING=1")))
   (build-system cmake-build-system)
   (inputs `( ;; Required for tests:
-            ("check", check)
-            ("openssl", openssl)))
-  (native-inputs `(("pkg-config", pkg-config)))
+            ("check" ,check)
+            ("openssl" ,openssl)))
+  (native-inputs `(("pkg-config" ,pkg-config)))
   (home-page "https://github.com/WhisperSystems/libsignal-protocol-c")
   (synopsis "Implementation of a ratcheting forward secrecy protocol")
   (description "libsignal-protocol-c is an implementation of a ratcheting
@@ -613,8 +613,8 @@ end-to-end encryption support; XML console.")
              (assoc-ref glib-or-gtk:%standard-phases 'glib-or-gtk-wrap)))))
       (inputs
        `(("libgee" ,libgee)
-         ("libsignal-protocol-c", libsignal-protocol-c)
-         ("libgcrypt", libgcrypt)
+         ("libsignal-protocol-c" ,libsignal-protocol-c)
+         ("libgcrypt" ,libgcrypt)
          ("libsoup" ,libsoup)
          ("sqlite" ,sqlite)
          ("gpgme" ,gpgme)
@@ -623,7 +623,7 @@ end-to-end encryption support; XML console.")
          ("gsettings-desktop-schemas" ,gsettings-desktop-schemas)))
       (native-inputs
        `(("pkg-config" ,pkg-config)
-         ("libsignal-protocol-c-source", (package-source libsignal-protocol-c))
+         ("libsignal-protocol-c-source" ,(package-source libsignal-protocol-c))
          ("glib" ,glib "bin")
          ("vala" ,vala)
          ("gettext" ,gettext-minimal)))
diff --git a/gnu/packages/music.scm b/gnu/packages/music.scm
index 4bd58d9733..c7c4913bf0 100644
--- a/gnu/packages/music.scm
+++ b/gnu/packages/music.scm
@@ -399,7 +399,7 @@ many input formats and provides a customisable Vi-style user interface.")
                             "Clarinet in Bb.denemo"))
              #t)))))
     (native-inputs
-     `(("glib:bin", glib "bin")   ; for gtester
+     `(("glib:bin" ,glib "bin")   ; for gtester
        ("pkg-config" ,pkg-config)))
     (inputs
      `(("alsa-lib" ,alsa-lib)
@@ -417,7 +417,7 @@ many input formats and provides a customisable Vi-style user interface.")
        ("libsndfile" ,libsndfile)
        ("libtool" ,libtool)
        ("libxml2" ,libxml2)
-       ("lilypond", lilypond)
+       ("lilypond" ,lilypond)
        ("portaudio" ,portaudio)
        ("portmidi" ,portmidi)
        ("rubberband" ,rubberband)))
@@ -2518,7 +2518,7 @@ websites such as Libre.fm.")
     (build-system python-build-system)
     (propagated-inputs
      `(("python-requests" ,python-requests)
-       ("eyed3", eyed3)
+       ("eyed3" ,eyed3)
        ("python-beautifulsoup4" ,python-beautifulsoup4)
        ("youtube-dl" ,youtube-dl)))
     (arguments
diff --git a/gnu/packages/networking.scm b/gnu/packages/networking.scm
index 395e75afa6..999f0578d7 100644
--- a/gnu/packages/networking.scm
+++ b/gnu/packages/networking.scm
@@ -1225,11 +1225,11 @@ gone wild and are suddenly taking up your bandwidth.")
                        (assoc-ref %build-inputs "ncurses") "/lib")
         (string-append "--with-tlslib=GnuTLS"))))
     (build-system gnu-build-system)
-    (inputs `(("gnutls", gnutls)
-              ("libxml2", libxml2)
-              ("ncurses", ncurses)
-              ("zlib", zlib)))
-    (native-inputs `(("pkg-config", pkg-config)))
+    (inputs `(("gnutls" ,gnutls)
+              ("libxml2" ,libxml2)
+              ("ncurses" ,ncurses)
+              ("zlib" ,zlib)))
+    (native-inputs `(("pkg-config" ,pkg-config)))
     (home-page "https://github.com/nzbget/nzbget")
     (synopsis "Usenet binary file downloader")
     (description
@@ -1455,11 +1455,11 @@ does not use SSH and requires a pre-shared symmetric key.")
               (patches
                (search-patches "quagga-reproducible-build.patch"))))
     (build-system gnu-build-system)
-    (native-inputs `(("pkg-config",pkg-config)
-                     ("perl",perl)
-                     ("dejagnu",dejagnu)))
-    (inputs `(("readline",readline)
-              ("c-ares",c-ares)))
+    (native-inputs `(("pkg-config" ,pkg-config)
+                     ("perl" ,perl)
+                     ("dejagnu" ,dejagnu)))
+    (inputs `(("readline" ,readline)
+              ("c-ares" ,c-ares)))
     (synopsis "Routing Software Suite")
     (description "Quagga is a routing software suite, providing implementations
 of OSPFv2, OSPFv3, RIP v1 and v2, RIPng and BGP-4 for Unix platforms.
diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
index 24f402128c..9346012390 100644
--- a/gnu/packages/ocaml.scm
+++ b/gnu/packages/ocaml.scm
@@ -3755,7 +3755,7 @@ sensitive completion, colors, and more.")
          (delete 'configure))))
     (inputs
      `(("topkg" ,ocaml-topkg)
-       ("opam", opam)))
+       ("opam" ,opam)))
     (synopsis "Various signed and unsigned integer types for OCaml")
     (description "The ocaml-integers library provides a number of 8-, 16-, 32-
 and 64-bit signed and unsigned integer types, together with aliases such as
@@ -3789,7 +3789,7 @@ long and size_t whose sizes depend on the host platform.")
       ("integers" ,ocaml-integers)
       ("lwt" ,ocaml-lwt)
       ("topkg" ,ocaml-topkg)
-      ("opam", opam)))
+      ("opam" ,opam)))
    (synopsis "Library for binding to C libraries using pure OCaml")
    (description "Ctypes is a library for binding to C libraries using pure
 OCaml.  The primary aim is to make writing C extensions as straightforward as
@@ -3822,7 +3822,7 @@ without writing or generating any C!")
         (delete 'configure))))
    (inputs
     `(("topkg" ,ocaml-topkg)
-      ("opam", opam)))
+      ("opam" ,opam)))
    (native-inputs
     `(("astring" ,ocaml-astring)))
    (synopsis "OCamlbuild plugin for C stubs")
diff --git a/gnu/packages/perl.scm b/gnu/packages/perl.scm
index e6a656c7b9..0bc4697229 100644
--- a/gnu/packages/perl.scm
+++ b/gnu/packages/perl.scm
@@ -5759,7 +5759,7 @@ most specific one) is instantiated.")
        ("perl-file-configdir" ,perl-file-configdir)
        ("perl-file-find-rule" ,perl-file-find-rule)
        ("perl-hash-merge" ,perl-hash-merge)
-       ("perl-moo", perl-moo)
+       ("perl-moo" ,perl-moo)
        ("perl-moox-file-configdir" ,perl-moox-file-configdir)
        ("perl-namespace-clean" ,perl-namespace-clean)))
     (home-page "http://search.cpan.org/dist/MooX-ConfigFromFile/")
diff --git a/gnu/packages/python-web.scm b/gnu/packages/python-web.scm
index 3b907cafcf..7974c005c2 100644
--- a/gnu/packages/python-web.scm
+++ b/gnu/packages/python-web.scm
@@ -823,7 +823,7 @@ internationalized messages within program source text.")
      '(#:tests? #f)) ; FIXME: Tests can't find zope.event.
     (propagated-inputs
      `(("python-zope-event" ,python-zope-event)
-       ("python-zope-exceptions", python-zope-exceptions)
+       ("python-zope-exceptions" ,python-zope-exceptions)
        ("python-zope-interface" ,python-zope-interface)))
     (native-inputs
      `(("python-zope-testing" ,python-zope-testing)
diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index aef63f334b..05d3390604 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -11975,7 +11975,7 @@ library.")
        "08if5yax1xn5yfp8p3765ccjmfcv9di7i4m5jckgnwvdsgznwkbj"))))
    (build-system python-build-system)
    (native-inputs `(("pkg-config" ,pkg-config)
-                    ("python-cython", python-cython)))
+                    ("python-cython" ,python-cython)))
    (home-page "https://github.com/aresch/rencode")
    (synopsis "Serialization of heterogeneous data structures")
    (description
@@ -12158,7 +12158,7 @@ created by running @code{python setup.py develop}).")
     (build-system python-build-system)
     (propagated-inputs
      `(("python-tqdm" ,python-tqdm)
-       ("python-pkginfo", python-pkginfo)
+       ("python-pkginfo" ,python-pkginfo)
        ("python-requests" ,python-requests)
        ("python-requests-toolbelt" ,python-requests-toolbelt)))
     (home-page "https://github.com/pypa/twine")
@@ -12568,7 +12568,7 @@ is the new Pyro version that is actively developed.")
      `(("netcdf" ,netcdf)))
     (propagated-inputs
      `(("python-numpy" ,python2-numpy-1.8)
-       ("python-pyro", python2-pyro)))
+       ("python-pyro" ,python2-pyro)))
     (arguments
      ;; ScientificPython is not compatible with Python 3
      `(#:python ,python-2
@@ -12915,7 +12915,7 @@ and other tools.")
              #t)))))
     (propagated-inputs
      `(("python-pygments" ,python-pygments)
-       ("python-requests", python-requests)
+       ("python-requests" ,python-requests)
        ("python-babel" ,python-babel) ; optional, for internationalization
        ("python-curtsies" ,python-curtsies) ; >= 0.1.18
        ("python-greenlet" ,python-greenlet)
diff --git a/gnu/packages/qt.scm b/gnu/packages/qt.scm
index a8c2729ee8..d6082bd7a4 100644
--- a/gnu/packages/qt.scm
+++ b/gnu/packages/qt.scm
@@ -1937,7 +1937,7 @@ different kinds of sliders, and much more.")
        ("libwebp" ,libwebp)
        ("sqlite" ,sqlite)
        ("fontconfig" ,fontconfig)
-       ("libxrender", libxrender)
+       ("libxrender" ,libxrender)
        ("qtbase" ,qtbase)
        ("qtdeclarative" ,qtdeclarative)
        ("qtmultimedia" ,qtmultimedia)
diff --git a/gnu/packages/ratpoison.scm b/gnu/packages/ratpoison.scm
index d630c24fd4..19321872c5 100644
--- a/gnu/packages/ratpoison.scm
+++ b/gnu/packages/ratpoison.scm
@@ -79,7 +79,7 @@
        ("readline" ,readline)
        ("xextproto" ,xextproto)))
     (native-inputs
-     `(("perl",perl)
+     `(("perl" ,perl)
        ("pkg-config" ,pkg-config)
        ("ratpoison.desktop" ,ratpoison.desktop)))
     (home-page "https://www.nongnu.org/ratpoison/")
diff --git a/gnu/packages/sdl.scm b/gnu/packages/sdl.scm
index 222fd5b6f1..30d18aa1c3 100644
--- a/gnu/packages/sdl.scm
+++ b/gnu/packages/sdl.scm
@@ -122,9 +122,9 @@ joystick, and graphics hardware.")
                ("fcitx" ,fcitx) ; helps with CJK input
                ("glib" ,glib)
                ("ibus" ,ibus)
-               ("libxkbcommon", libxkbcommon)
-               ("wayland", wayland)
-               ("wayland-protocols", wayland-protocols))
+               ("libxkbcommon" ,libxkbcommon)
+               ("wayland" ,wayland)
+               ("wayland-protocols" ,wayland-protocols))
              (package-inputs sdl)))
     (license bsd-3)))
 
diff --git a/gnu/packages/sml.scm b/gnu/packages/sml.scm
index b9bd7a7e82..1d7fd3fb51 100644
--- a/gnu/packages/sml.scm
+++ b/gnu/packages/sml.scm
@@ -42,7 +42,7 @@
     (build-system gnu-build-system)
     (inputs
      `(("gmp" ,gmp)
-       ("lesstif",lesstif)
+       ("lesstif" ,lesstif)
        ("libffi" ,libffi)
        ("libx11" ,libx11)
        ("libxt" ,libxt)))
diff --git a/gnu/packages/terminals.scm b/gnu/packages/terminals.scm
index eeae8bea41..6540a9feaf 100644
--- a/gnu/packages/terminals.scm
+++ b/gnu/packages/terminals.scm
@@ -128,9 +128,9 @@ configurable through a graphical wizard.")
                            (string-append "DESTDIR="
                                           (assoc-ref %outputs "out")))))
     (inputs
-     `(("vte", vte-ng)
-       ("gtk+", gtk+)
-       ("ncurses", ncurses)))
+     `(("vte" ,vte-ng)
+       ("gtk+" ,gtk+)
+       ("ncurses" ,ncurses)))
     (native-inputs
      `(("pkg-config" ,pkg-config)))
 
@@ -292,10 +292,10 @@ multi-seat support, a replacement for @command{mingetty}, and more.")
        #:phases (modify-phases %standard-phases
                   (delete 'configure))
        #:test-target "test"))
-    (inputs `(("ncurses", ncurses)))
-    (native-inputs `(("libtool", libtool)
+    (inputs `(("ncurses" ,ncurses)))
+    (native-inputs `(("libtool" ,libtool)
                      ("perl-test-harness" ,perl-test-harness)
-                     ("pkg-config", pkg-config)))
+                     ("pkg-config" ,pkg-config)))
     (synopsis "Keyboard entry processing library for terminal-based programs")
     (description
      "Libtermkey handles all the necessary logic to recognise special keys, UTF-8
@@ -692,7 +692,7 @@ terminal or piped input.")
              (delete-file "tests/test_input_output.py")
              #t)))))
     (propagated-inputs
-     `(("python-wcwidth", python-wcwidth)))
+     `(("python-wcwidth" ,python-wcwidth)))
     (native-inputs
      `(("python-pytest-runner" ,python-pytest-runner)
        ("python-pytest" ,python-pytest)))
@@ -762,7 +762,7 @@ than a terminal.")
              (invoke "nosetests" "-v"))))))
     (propagated-inputs
      `(("python-blessings" ,python-blessings)
-       ("python-wcwidth", python-wcwidth)))
+       ("python-wcwidth" ,python-wcwidth)))
     (native-inputs
      `(("python-mock" ,python-mock)
        ("python-pyte" ,python-pyte)
diff --git a/gnu/packages/text-editors.scm b/gnu/packages/text-editors.scm
index f1ccab9af9..cbf077cea3 100644
--- a/gnu/packages/text-editors.scm
+++ b/gnu/packages/text-editors.scm
@@ -81,10 +81,10 @@
      (list (search-path-specification
             (variable "VIS_PATH")
             (files '("share/vis")))))
-    (inputs `(("lua", lua)
-              ("ncurses", ncurses)
-              ("libtermkey", libtermkey)
-              ("lua-lpeg", lua-lpeg)
+    (inputs `(("lua" ,lua)
+              ("ncurses" ,ncurses)
+              ("libtermkey" ,libtermkey)
+              ("lua-lpeg" ,lua-lpeg)
               ("tre" ,tre)))
     (synopsis "Vim-like text editor")
     (description
diff --git a/gnu/packages/video.scm b/gnu/packages/video.scm
index 0979b4f4e7..39354f93ed 100644
--- a/gnu/packages/video.scm
+++ b/gnu/packages/video.scm
@@ -1062,7 +1062,7 @@ SVCD, DVD, 3ivx, DivX 3/4/5, WMV and H.264 movies.")
        ("waf" ,python-waf)
        ("wayland" ,wayland)
        ("wayland-protocols" ,wayland-protocols)
-       ("libxkbcommon", libxkbcommon)
+       ("libxkbcommon" ,libxkbcommon)
        ("youtube-dl" ,youtube-dl)
        ("zlib" ,zlib)))
     (arguments
@@ -2461,7 +2461,7 @@ MPEG-2, MPEG-4, DVD (VOB)...
        ("libtool" ,libtool)
        ("pkg-config" ,pkg-config)
        ("zlib" ,zlib)
-       ("libmediainfo", libmediainfo)
+       ("libmediainfo" ,libmediainfo)
        ("libzen" ,libzen)))
     (build-system gnu-build-system)
     (arguments
diff --git a/gnu/packages/virtualization.scm b/gnu/packages/virtualization.scm
index 24f7333cd8..55a92eca0d 100644
--- a/gnu/packages/virtualization.scm
+++ b/gnu/packages/virtualization.scm
@@ -747,7 +747,7 @@ Machine Protocol.")
              ("sdl2" ,sdl2)
              ("sdl2-ttf" ,sdl2-ttf)
              ("spice-protocol" ,spice-protocol)))
-   (native-inputs `(("pkg-config", pkg-config)))
+   (native-inputs `(("pkg-config" ,pkg-config)))
    (arguments
     `(#:tests? #f ;; No tests are available.
       #:phases (modify-phases %standard-phases
diff --git a/gnu/packages/vulkan.scm b/gnu/packages/vulkan.scm
index dc73ce3cad..4d981416d0 100644
--- a/gnu/packages/vulkan.scm
+++ b/gnu/packages/vulkan.scm
@@ -103,7 +103,7 @@ and for the GLSL.std.450 extended instruction set.
                                                (assoc-ref %build-inputs
                                                           "spirv-headers")))))
      (inputs `(("spirv-headers" ,spirv-headers)))
-     (native-inputs `(("pkg-config", pkg-config)
+     (native-inputs `(("pkg-config" ,pkg-config)
                       ("python" ,python)))
      (home-page "https://github.com/KhronosGroup/SPIRV-Tools")
      (synopsis "API and commands for processing SPIR-V modules")
@@ -190,7 +190,7 @@ interpretation of the specifications for these languages.")
               ("mesa" ,mesa)
               ("spirv-tools" ,spirv-tools)
               ("wayland" ,wayland)))
-    (native-inputs `(("pkg-config", pkg-config)
+    (native-inputs `(("pkg-config" ,pkg-config)
                      ("python" ,python)))
     (home-page
      "https://github.com/KhronosGroup/Vulkan-LoaderAndValidationLayers")
diff --git a/gnu/packages/web.scm b/gnu/packages/web.scm
index ceb7d9b7c7..394fa7b71c 100644
--- a/gnu/packages/web.scm
+++ b/gnu/packages/web.scm
@@ -960,9 +960,9 @@ of people.")
      ; named 'stubout'". The tests can be run by replacing the check phase with
      ; the command "python setup.py nosetests --verbosity=3".
     (native-inputs `(; Required for tests:
-                     ("python-mox3", python-mox3)
-                     ("python-nose", python-nose)))
-    (propagated-inputs `(("python-numpy", python-numpy)))
+                     ("python-mox3" ,python-mox3)
+                     ("python-nose" ,python-nose)))
+    (propagated-inputs `(("python-numpy" ,python-numpy)))
     (home-page "https://github.com/novnc/websockify")
     (synopsis "WebSockets support for any application/server")
     (description "Websockify translates WebSockets traffic to normal socket
@@ -989,7 +989,7 @@ directions.")
        #:tests? #f))                         ; no test target
     (native-inputs `(("flex" ,flex)))
     (inputs `(("gnutls" ,gnutls)
-              ("libcrypt", libgcrypt)))
+              ("libcrypt" ,libgcrypt)))
     (home-page "https://www.gedanken.org.uk/software/wwwoffle/")
     (synopsis "Caching web proxy optimized for intermittent internet links")
     (description "WWWOFFLE is a proxy web server that is especially good for
diff --git a/gnu/packages/wget.scm b/gnu/packages/wget.scm
index c6a319965a..585b8a0342 100644
--- a/gnu/packages/wget.scm
+++ b/gnu/packages/wget.scm
@@ -152,21 +152,21 @@ online pastebin services.")
           (zero? (system* "sh" "./bootstrap"
                           "--gnulib-srcdir=gnulib"
                           "--no-git")))))))
-   (inputs `(("autoconf", autoconf)
-             ("automake", automake)
-             ("doxygen", doxygen)
-             ("flex", flex)
-             ("gettext", gettext-minimal)
-             ("gnutls", gnutls/dane)
-             ("libiconv", libiconv)
-             ("libidn2", libidn2)
-             ("libmicrohttpd", libmicrohttpd)
-             ("libpsl", libpsl)
-             ("libtool", libtool)
-             ("pcre2", pcre2)
-             ("python", python)))
+   (inputs `(("autoconf" ,autoconf)
+             ("automake" ,automake)
+             ("doxygen" ,doxygen)
+             ("flex" ,flex)
+             ("gettext" ,gettext-minimal)
+             ("gnutls" ,gnutls/dane)
+             ("libiconv" ,libiconv)
+             ("libidn2" ,libidn2)
+             ("libmicrohttpd" ,libmicrohttpd)
+             ("libpsl" ,libpsl)
+             ("libtool" ,libtool)
+             ("pcre2" ,pcre2)
+             ("python" ,python)))
    ;; TODO: Add libbrotlidec, libnghttp2.
-   (native-inputs `(("pkg-config", pkg-config)))
+   (native-inputs `(("pkg-config" ,pkg-config)))
    (home-page "https://gitlab.com/gnuwget/wget2")
    (synopsis "Successor of GNU Wget")
    (description "GNU Wget2 is the successor of GNU Wget, a file and recursive
diff --git a/gnu/packages/wine.scm b/gnu/packages/wine.scm
index 37d36cf922..8496eb3365 100644
--- a/gnu/packages/wine.scm
+++ b/gnu/packages/wine.scm
@@ -278,8 +278,8 @@ integrate Windows applications into your desktop.")
                (base32
                 "14wf7536rkmhav9ibbvhqqkfqmbk1dckhd2679i5scizr5x290x4"))))
     (inputs `(("autoconf" ,autoconf) ; for autoreconf
-              ("gtk+", gtk+)
-              ("libva", libva)
+              ("gtk+" ,gtk+)
+              ("libva" ,libva)
               ("python" ,python)
               ("sdl2" ,sdl2)
               ("util-linux" ,util-linux) ; for hexdump
diff --git a/gnu/packages/wm.scm b/gnu/packages/wm.scm
index b38b3caa25..9bd3492413 100644
--- a/gnu/packages/wm.scm
+++ b/gnu/packages/wm.scm
@@ -710,7 +710,7 @@ experience.")
               ("libxdg-basedir" ,libxdg-basedir)
               ("libxkbcommon" ,libxkbcommon)
               ("lua" ,lua)
-              ("lua-lgi",lua-lgi)
+              ("lua-lgi" ,lua-lgi)
               ("pango" ,pango)
               ("startup-notification" ,startup-notification)
               ("xcb-util" ,xcb-util)
diff --git a/gnu/packages/xdisorg.scm b/gnu/packages/xdisorg.scm
index 07a9b390fa..4e7f2c207f 100644
--- a/gnu/packages/xdisorg.scm
+++ b/gnu/packages/xdisorg.scm
@@ -1332,9 +1332,9 @@ XCB util-xrm module provides the following libraries:
                         (install-file "README" doc)
                         ;; Avoid unspecified return value.
                         #t))))))
-    (inputs `(("libx11", libx11)
-              ("libxext", libxext)
-              ("libxxf86vm", libxxf86vm)))
+    (inputs `(("libx11" ,libx11)
+              ("libxext" ,libxext)
+              ("libxxf86vm" ,libxxf86vm)))
     (synopsis "Tiny monitor calibration loader for XFree86 (or X.org)")
     (description "xcalib is a tiny tool to load the content of vcgt-Tags in ICC
 profiles to the video card's gamma ramp.  It does work with most video card
diff --git a/gnu/packages/xml.scm b/gnu/packages/xml.scm
index 729fa56a30..6c1d2a7796 100644
--- a/gnu/packages/xml.scm
+++ b/gnu/packages/xml.scm
@@ -1415,7 +1415,7 @@ characters into a single event.")
     (propagated-inputs
      `(("perl-libxml" ,perl-libxml)
        ("perl-xml-filter-buffertext" ,perl-xml-filter-buffertext)
-       ("perl-xml-namespacesupport", perl-xml-namespacesupport)
+       ("perl-xml-namespacesupport" ,perl-xml-namespacesupport)
        ("perl-xml-sax-base" ,perl-xml-sax-base)))
     (home-page "http://search.cpan.org/dist/XML-SAX-Writer/")
     (synopsis "SAX2 XML Writer")
@@ -1472,7 +1472,7 @@ It provides a flexible escaping technique and pretty printing.")
        ("perl-xml-sax-writer" ,perl-xml-sax-writer)
        ("perl-xml-simple" ,perl-xml-simple)
        ("perl-xml-xpathengine" ,perl-xml-xpathengine)
-       ("perl-test-pod", perl-test-pod)
+       ("perl-test-pod" ,perl-test-pod)
        ("perl-tree-xpathengine" ,perl-tree-xpathengine)))
     (home-page "http://search.cpan.org/dist/XML-Twig/")
     (synopsis "Perl module for processing huge XML documents in tree mode")
diff --git a/gnu/packages/xorg.scm b/gnu/packages/xorg.scm
index 46a9a3b85f..1e4835b5c0 100644
--- a/gnu/packages/xorg.scm
+++ b/gnu/packages/xorg.scm
@@ -5983,7 +5983,7 @@ basic eye-candy effects.")
               ("python2-rencode" ,python2-rencode)
               ("xorg-server" ,xorg-server)))
     (native-inputs `(("pkg-config" ,pkg-config)
-                     ("python2-cython", python2-cython)))
+                     ("python2-cython" ,python2-cython)))
     (arguments
      `(#:python ,python-2 ;; no full Python 3 support yet
        #:configure-flags '("--with-tests"